Hellenistic
The astrology of the Greek-speaking Mediterranean from roughly the 1st century BCE to the 7th century CE, as recorded by authors such as Vettius Valens, Dorotheus and Ptolemy.
1 Oct 2026
The Moon in Cancer is in domicile, its own home sign, and the tradition lists no other planet's rulership there. Cancer is a feminine, cardinal water sign; the Moon is a feminine, night-team planet, so sign, gender and sect all agree. Sect is the tradition's way of sorting the planets into a day team and a night team. Hellenistic astrologers count domicile among the major dignities, alongside exaltation, triplicity and bounds. Saturn is in detriment in Cancer and Mars is in fall there, points about the wider chart. In Dorotheus' scheme the Moon also shares the water triplicity as a participating lord, which adds a thin second line of support. Because the Moon is its own domicile lord, no second planet needs inspecting; the tradition reads its house, its phase against the Sun and its aspects by sign. Phase needs exact degrees.
A note on “detriment”: the early Hellenistic texts note a planet opposite its own sign without naming it. The term is defined only in late and medieval sources, and scholars disagree on whether the idea was implicit earlier.
Sources
- Ptolemy, Tetrabiblos, Book I
- Dorotheus of Sidon, Carmen Astrologicum
- Chris Brennan, Hellenistic Astrology: The Study of Fate and Fortune (2017)
What was checked
An AI research review checked this text against sources on 1 Oct 2026. No person has reviewed it.
Reviewer's notes
Checked sign element, modality and gender, domicile, exaltation, detriment and fall against the project data and Ptolemy, plus sect and sign relationships; all consistent. Changed: removed the claim that Hellenistic astrologers rank domicile above exaltation, which Ptolemy does not state and which is a later ranking. triplicity lords match the Dorothean table (secondary sources; Carmen Astrologicum itself not opened); gender/sect match claims rest on Ptolemy and a secondary source. Detriment is stated as a table fact where it appears; its Hellenistic status is disputed (secondary source only). Source works confirmed to exist and to treat the topic (Valens Book I opened; others via secondary pages).
Sources consulted
- Loeb text of Ptolemy, Tetrabiblos I: planet genders (I.6), diurnal/nocturnal planets and Mercury as morning/evening star (I.7), masculine/feminine and bicorporeal signs (I.11–12), houses of Sun, Moon and Saturn (I.17), exaltations and depressions (I.19); Ptolemy does not rank domicile above exaltation penelope.uchicago.edu (opens in a new tab)
- Riley's translation, Valens Anthology Book I: day/night sect of each planet, and the natures of the signs (house of, masculine/feminine, bicorporeal) skyscript.co.uk (opens in a new tab)
- table of dignities; Hellenistic authors treated domicile, exaltation, triplicity and bounds as comparably influential, ranking and point scores came later (secondary source) en.wikipedia.org (opens in a new tab)
- Dorothean triplicity table (fire Sun/Jupiter/Saturn, earth Venus/Moon/Mars, air Saturn/Mercury/Jupiter, water Venus/Mars/Moon); secondary source augurine.com (opens in a new tab)
- quotes Dorotheus on the fire triplicity (Sun, Jupiter, Saturn by day; Jupiter, Sun, Saturn by night) and that all three lords count; secondary source sevenstarsastrology.com (opens in a new tab)
- masculine signs are diurnal and feminine nocturnal; ancient authors (Dorotheus, Serapio) say planets do better in signs of their own gender or sect; secondary source sevenstarsastrology.com (opens in a new tab)
- Carmen Astrologicum (Pentateuch), Pingree translation 1976 en.wikipedia.org (opens in a new tab)
- Brennan, Hellenistic Astrology: The Study of Fate and Fortune, February 2017, survey of the tradition's techniques goodreads.com (opens in a new tab)